Make empty generated source files descriptive #108

Job	Run time
Soundness / Check generated code	1m 8s
Benchmarks / Construct Benchmarks matrix	4s
Soundness / Swift license headers check	6s
Cxx interop / Construct Cxx interop matrix	3s
Unit tests / Construct unit test matrix	4s
Examples / Linux (5.9)	24s
Examples / Linux (5.10)	23s
Examples / Linux (6.0)	1m 23s
Examples / Linux (nightly-6.0)	1m 22s
Examples / Linux (nightly-main)	1m 22s
Examples / Windows (6.0)	2s
Examples / Windows (nightly-6.0)	3s
Examples / Windows (nightly-main)	1s
Soundness / Broken symlinks check	3s
Soundness / API breakage check	1m 8s
Soundness / Documentation check	1m 16s
Soundness / Format check	32s
Soundness / License headers check	5s
Soundness / Python lint check	6s
Soundness / Shell check	33s
Soundness / Unacceptable language check	3s
Soundness / YAML lint check	3s
Cxx interop / Cxx interop / Linux (6.0)	57s
Cxx interop / Cxx interop / Linux (nightly-6.0)	1m 2s
Cxx interop / Cxx interop / Linux (nightly-main)	1m 0s
Unit tests / Unit tests / Linux (6.0)	1m 26s
Unit tests / Unit tests / Linux (nightly-6.0)	1m 36s
Unit tests / Unit tests / Linux (nightly-main)	1m 36s
Benchmarks / Benchmarks / Linux (6.0)	1m 32s
Benchmarks / Benchmarks / Linux (nightly-6.0)	1m 31s
Benchmarks / Benchmarks / Linux (nightly-main)	1m 31s
	22m 25s

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